Stove and other heater.



G. FURUHOLMENf sTovE AND OTHER HEATER.

APPLICATION FILED MAR. I6. 1914.

Patented Dec. 11, 1917.

3 SHEETS-SHEEl` I f 'l-nuenin 6160149@ ELrL/Lholznn G. FURUHOLIVIIIENr sTovE AND OTHER HEATER.4

APPLICATION man MAR. 16. |914.

Patented Dec. 11

f 3 sugars-sneer z.

f v K Y Y f/////////////A filvenor georg@ PpufLLloluLez1 lli/ine s s e S y G. FURUHOLMEN. STOVE AND OTHER HEATER.

APPLICATION FILED MAR. T6, i914.

Patented Dec. 11, 1917.

s SHEETS-SHEET a.

. 1 71. v e 711150: 'eorge .7J arujzol Ine n i earns, "OEEIGEQV GEORGE EIIEUHOLMEN, or MINNEAPOLIS, MINNESOTA. As'sIeNoR'i 'rol FRAM Aproi MATIO EUENAOE COMPANY,"OE MINNEAPOLIS, MINNESOTA 'i Y sriOvE AND-,OTHER IiiiizAtiER.v

To all zii/0m t may/comen, i v

Be it known that I, GEORGE FURUHQLMEN,

a subject of the King of Norway, residing e' at Minneapolis, in the county of 'Hennepin and State of Minnesota,.have invented newl and useful Improvements in Stoves and other Heaters, of which the following is a specification. l y Y My invention relates to improvements vin stoves and other heatersand has for'its 0bject to provide a highly efHcienty heatpro-r during device. Y l e "More specifically its object is to provide a stove having means adapted to feed coal from a sourceof supply into the fire box,ad Vance lthe saine across the grates thereof and eject the iinconsuined material therefrom, said means being also adapted to `vary the draft through certain portions of the grate and thereby .regulate,consumption within"l the fire box.

It. is also my object to providel a Stove having a device adapted to advance a comparatively thin laver of coal to thegrate and force said fuel across the grate,said grate being formed with a recess or retort adapted to receive a relatively largevquan-v tity of coal and thereby retard its advance, whereby said coal is subjectedto heat for a considerable time at the marginof the fire to distil the gases therefrom, preparatory to later consumption. y y u A further object is to provide a stove of this kind adapted to feed fuel ontok the grates at an elevation wherev the temperature is relatively high to yeXpe-ditethe process of lcoking the coal.

j A further object is'to provide in `a stove of this class a baffle plate rhaving yfanva'ir inlet conduit at its lower margin, said' vplate being adapted to direct liberatedigases from.v the coking coal onto the surface of the burning fuel and supply fresh air to said gases to form therewith av combustililek mixture of high efficiency.

A further obiect is to ,provide a stove of this kind in whichthe surface of the burn-Vk ing mass rises toward the `flue of the ire` box to conformwith the. path of the gases, and insure the ignitionof'the samebeforey exit from said lire box.` V l A further object is to provide meansfor Speciticationof Letters Patent.. i' f Pfsngentefl box while undergoingthe cokin'g process.

f In the"V *,drawings, "Figure" 1y isv la longitudinal sectional'view illustrating that por- I i Dee.y 11,1911.;

Aiipiieatioi fiiea Mrciiie, 1314. iseriaiiv .s2ii,95 7. j f f` iiisintegiiiting the pakjedfcoiie' affini' maisV .gin of the 'tire andalsdfor removing 'cokei which may adheretol the sidesofthe fire-f tion of a stove yembodying vmy invention;y Fig. 2 is an end 'elevation Ofa portion 'of-'a' stove showing in detail certain parts ofii'iy" n Fig. 3 is a sectional view` taken on theline 3-'3 ofFig.- 1; Figl is a" improvements V;

detail perspe'ctivefview illustrating? a "por' tionr of the"` stationary stovefgr'atey'Fig., 5- ril-' isa perspective View illustrating in detail,

a portion of theftiltablestove grate#-,Ilig'ifg 6 is' i demii perspective View ofthe disintei" i grating device; Fig.` 7' is Va detaillperspec'l tivef view 'of the plunger head 'and convever tray andjFig. 8 isla detail sectionalv view` positionsfof the movable showing different grate and 'fire wall.

" `Referring tothe drawings, liliave';used.l the referencey numeral 10 to indicate the sides ofthev i'irebox, 11 thebaflie-,plate be` tween said sides,"12 thel fresh air conduit at `the margin of saidplate,` 13 the'fire wall at one 4end of the rebox, 14v the hpp'erfat y the other end thereof, 15 the vStationarvA grate, 16 thetiltable ygrate at the bottonio'fj the fire dbox, 17 the conveyer 'tray;leading` from the hopper'to s aidegrates andv1'8ft1ie; plunger or stoker head. .This lire box'is assembled in'v a stove or furnace of ordi-v nary construction having atop 19, sides`20,

ings.

The 'conveyer tray A17 receives. coalrfrom-l theehopper 14 andcarries it 'tothe stationary grate 15, from whichsaidfuel is ad-f gases isndistilled therefrom. "Said'c'oalfis then delivered upon the vstationary Agrate' adjacentvto the'inarginr of the fire', wheref substantiallv'all of theremaining gases arev end 21 and as` indicatedV4 inthe'draw`v distmd and finally the coke is'forced into"` 5 ary grate is' correspondingly expanded fory the reason that itis slight-ly raised Dy the wedge-shaped'endV of the plunger' head'18 during each v working" stroke thereof.

' I provide meanswher'ebyithefarea ofthe grate7 through which air is allowed to pass, 1s increased'or dnmnished asdeslred. "Th'e 45 and 46 of the plunger head 18 close the openings between the lgrate bars'27, 28 and 29.` The damper '-63 moves simultaneously with the plungerhead and said' plates 45 and 46 and damper 63 "are arranged'in, such relation that' the draft conduit 32 and the openings between the grate bars 29, 28 and are opened consecutively in the order namedk and closed consecutively vvin the Vopposite, order. f Suitable y adjustments may be provided for limiting the rotation Vofthe shaft 52-and deterniiningV the position'of theplun'- ger head 18 and damper 63 with respect to thevstationary. grate, such as'the adjustable screw 67 7' in'thestop 256, which is adapted to engage the :hand lever 55 at vdifferent positions thereof'.l` In case the Vdamper 63, in its normalvpositio'n, closes the draft conduit 32,-the material escaping through the .slots 292L in the stationary grate :bar 15 `is retained by said damper until the working stroke-of the plunger 18, when it-is discharged. 4

The baflie plate f11 isl provided with a fresh air conduit which communicatesfat its ends with the apertures 23 fin the sides 10 of the iire ibox and is perforated with outlet ports I68 for the purposeof mixing air with -thegasesa's they strike the flames or vvglowing coalsto form with said gasesa combustible mixture 'ata pointifwhere'the same is readily ignited. I' f 'l The disintegratorl 69fis arranged within the fire box and is designedto-break up the vfuel which is often formed in a cohesive mass or cake asit approaches the grate. Said 'device'is'also adapted toremovej theV portion of the fuel 'adhering'to the sides of the ir'e box. 'This fdisintegrator 'comprises a Vpairofarms''O beveled at their edges 70a and'joined vat the upper ends thereof-with across-piece 71 having large `teeth 72 'thereon each of'saidfarmsbeing -provided 'at'its lower end with a-journal 73 revoluble in a side-10 ofthe fire box. Levers 74 and 7 'ar'e secured 1y torone of -the journals 73. The spring y7 6, attached to the side 20 of the stove, isf'secured to thez lever 74-Kandy forces the arms and teeth 72`into thefuel, asindifi catedV in vdotted lines infFig.`1`,/=the'limit`o'f such movement being determined by-the stop78, against which the :lever 74 impinges.

The disk 80, revoluble 4upon. thev shaft f52`, is

providedwith spaced notchesiSl' in itsape` i riphery and alsowith spaced pins' 82S pro-' truding from the sides thereof. `Thehand 'lever 55 is llfurnishedwith a :dog 83' to 'en-s gage said pins and is` adapted toi turnv saidl disk a stepupon each .working strolethereevv of, saidl disk being-secured againstreverse` movement, when the hand lever-155 is turned;`

`by the spring-actuated dog 84, whichfen' gagesfon'e "of its notches 81.l f The: pins 'T82 travelthrough the path of thevleverii-and during the movement of the diskiat .each step,"o`ne pin releases the vlever',-thu'sperr mittingv the fallofthe arms 70 and'v toothed balr 71; accelerated by the actionfof :the spring .76.1 The; .next lsucceedingi '-pin- ,en-V

gages andv movesithe `lever'75 against the action of saidspringto `raise said-teethifrom thepath of the plunger head18and-wreta1n the `same inv a'positionire'mote from-thea heatedlfuelg4 f -In operation,fthe hand leveriis-reciprof cated f at' intervals. as 'desiredf' .Uponeachfy a forward strokeo'f saidleverfthe coal onthex tray 17 is advanceda step Atoward the grate 15, the fuel uponL-.the'vgrates l51andg16` is movedbyfthe' plungerl head v18. across the grates, the disintegrator fallsand is returned to 4slew-'ated 'position and theedamper 63- vis shifted topermitthe escape ofV Awastematerial if there is `any retained in the conduit 32. Upon'eachreturnstroke of said handl the grate 16 is tilted toremove ashes therefrom. Meanwhile, `the fuel upon the-com. veyer tray-17 and upon that portionzof .the grate 15 through whichfth'ereris'nofdraft, is heated orfcoked, thus Acausinggases'to be emitted therefrom; lThese gases lin their course towardthe Hue 22are directed bylth'e lever, Aa 4quantity of fuel isdeli'vered from: s the tray intothe retort in'the-'gratel yand *ag bailie plate 11 against the burning coals, and- V- said gases r are supplied at the lmarginof said platewith fresh air fromy the conduit 12 -to form therewith a highly combustible mixture' 1 The draft area of the grate is determined byradjusting; the ,throw` of the hand -lever l 55 and'thereby fixing thenormalgposition fthe?1MM-SerA head 18 anddamper 63 wth respect. to thestationary'grate 15.1, The desired` lmovement of the `tiltalole grate is secured by adjusting thesetscrew 62in the arm-60 to determinethe point-at which .the said screw is-released from notch 59 in the lug 58.;

The are `wan ,1a isadjusfedl-t pdsi'tii adjacentfto the grate'16whenthe refuse or waste particles aresmall and in case 'saidparticlesy are coarse, lthey wall ris permitted to recede a' suliicient ,distance fromv said gra-te softhat theA coarser residuumfmay enter the spacetbetween the crushing 'surfaces 38'and 40 of said grate. and wall.. l e.

" the Y :Having .described .my invention, .what I claim as lnew anddesire vto `protect by Letters Patent, is.:

f1. Ina stove, -an upwardly inclined grate having aretort at the lowerv margin thereof,

a reciprocating tray adapted to deliver fuel into said retort and a plunger arranged to a portion-of the `grate'and means for regu lating the stroke of said plunger.

r3. In .a stovea fire box, la fuelyhopper therefor, a grate lin the 4bottomof said box, a reciprocating plunger adapted to ,play over a .portion .of vsaid grate to deliver fuel from the fhoppe'r and advance the same over said grate, fsaid .reciprocating plunger being also adapted to -control the passage of air through a portion-of the grate.

+L. In a stove, afire box, a 'fuel hopper therefor, a grate in the bottom of said box having stationary and pivotally mounted grate sections, an upwardly inclined carrier adapted t0 deliver fuel from the hopper to the stationary grate section, then pass it across `said 'grate to the pivoted grate `section, and meansfor simultaneously moving said l.carrier and tilting said pivoted grate section. f

15. .In afstove, a fire box, a fuel hopper therefor, a ygrate vin the bottom -of said box having stationary and pivotally mounted grate sections, aplunger adapted :to deliver fuel ffroinzsaidhopper to ithestationary grate sectionyand advance the same upon said pivoted .l-grate section and `also to control the passage of air through a portion of the grate, and means for .reciprocating said plunger and tilting the pivoted grate `section.

16. Inastove, a fireibox, a fuel hopper, a grate fforisaid fire box havingl a stationary and aztiltable'section, an'upwardly inclined reciprocating conveyer tray extending from said hopper to the stationarysection, a plunger `head secured to said tray and means for reciprocating the latter, whereby fuel is fed iupon the stationary 'gratethen moved across both grates and the residue thereof discharged vfrom the tiltable grate.

Y 7. 'Ina stove, aw'fire box, a fuel hopper at the "forw'ardend thereof, ka grate atthe other endhaving a movable sectionthereiman-upwardly inclined reciprocating plate extending from thefbottomof said hopper to said grate ftocarry Efuel from the former 5to the latter, a plunger cofacting withsaidftray to Laage@ advance Vfuel across -said grate and VIneans'fin o perative connection with .said plunger for tilting said movable grate section.

S. Ina stove, a re box, Vhaving a grate `therein, .a fuel hopperrfor said Vfire box, a

conveyer tray between said hopper and grate sloping upward toward the grate, .said grateL fuel on the othersidc and an airconduit at the margin ofsaid plate, adapted to supply fresh lair .to said streamof gases.

9. In azstofve, a `re-box, aI-fuel ihoppema grate having steps Ydown from the feeding side thereof, thensloped upward tothe discharge-side to form.a.colring retort vfor fuel in -said feedingside and to provide an upwardly inclined pathfor theburningfuel, va

carrier to deliver :fuel .from the hopper Linto said retort, means topush the fuel from the retort across the ,upwardly inclined portion ofthe grate, a flueopening :above the dischargeside of the grateand a .bathe-plate extending ytransversely into the fire 4box .to direct the ygases liberated from -thecoking fuel-on the feeding-side of thegrateina thin stream against the rising -mass lof burning fuel on the other-side. v Y

10. In a stove,-a'fire boxaaffuelihopper, a grate havingsteps down from :the feeding side=thereof,xthen sloped upward to the ydischarge side to formalcoking :retort for .fuel in said :feeding :side vfand :to @provide .an .upwardly inclined grate-section :for the .burning fuel, fa fflue .above the ldischarge :side :of the grate, 1 a carrier .to :deliver :fuel from the hopper into said retort and Ymeans to push the fuel from the retorty across said upwardly inclinedlsectionl'ofthegrate.

11. In a stove, a fire-box, a fuel hopper, a f grate ,having steps down ,from ,the -feedingv `side thereof, then .sloped upward to the discharge .side yto form a -coking retort forffuel .in said feeding -side and to :providean Vupwardly inclined support for the burning ffuel,;a carrier Yto deliver .ifuel 'from the yhopper into the retort, means tto push the fuel :from the retort across/the `upwardlydnclined portion ofthe grate, a'flue, opening .above :the discharge side-of :the grate and a baffleplate :extending ltrans-v versely 'into the lire-boxto direct the gases liberated from the cokingcoal lon the feeding side of thegrate-iniathin stream against the risingfmassiofzburningfuel von-the other side, andan air conduit atfthelnargin of said plate to supply l,fresh airs-:to saidgases.

.12. :In .a z-stove, .re1boX, a grate therein having a stationary and a movable-section,` a damper for regulating the draft throughy said stationary grate section, a movable tray to carry fuel to said grate, a plunger to force said fuel across the grate, a revoluble shaft in operative connection With the tray, plunger and damper and means for turning said shaft to reciprocate said tray and plunger and shift said damper. v Y

13. In a stove, a stationary grate, a tilt# able grate adjacent to said stationary grate,. ya fire-Wall adjacent to the tiltable grate, said grate and {ire-Wall having co-acting crushing surfaces adapted to crush and dischargel a quantity of material When the grate is tilted, 15`

a fuel hopper,a carrier to deliver fuel from the hopper to said stationary grate, reciprocating means to advance vfuel across the grates upon one stroke thereof and for tilting' said movable grate stroke. l l

In testimony whereof, I have signed my name'4 to this specification in the presence of two subscribingvvitnesses.

' GEORGE FURUHOLMEN.

Witnesses: y f

OLAF B. ANDERSON, F. C. CASWELL.

Copies oflthis patent may be dbtaixied for ive' cents each, by addressing the Commissioner of Patents,

Washington, D. C.

during the opposite 20 

